Shampoos and
the strength of hair
Nienke and Sylvie want to assert how strong hairs are and to understand
why. First, they realize experiments from students of their school, testing
hairs from blonde, red, brown and black girls and boys. They discover
that hairs are extremely strong: one head of hairs would be able to withstand
12,000 kg. Afterwards, they wonder if all the shampoos we use are really
needed. Starting from a pharmacist’s recipe, they design their own shampoo.
As a result of their investigation, they gain more respect in this simple
part of our body, which is not just something dead but well a complex
thing that we can’t underestimate
|
